Prompt to confirm upgrade

[pantheredeye]

Added a prompt after running yarn rw upgrade to confirm before starting.

Motivation: I have upgraded a project twice, that I remember, on accident while looking for information about the latest upgrade. Right now, when a user runs yarn rw upgrade the process starts immediately. This check adds a simple prompt to the beginning of listr tasks to confirm if they want to upgrade the project.

Thoughts:

The prompt method is taken from other cli commands using a prompt. It defaults to adding (Y/n) >> true to the end of the prompt. I don't like the mismatch in terms. But, I can't figure out how to default it to 'yes' instead of true.

I looked for tests related to the upgrade command, but didn't find them.

Screenshots:

Prompt:

Upgrade Cancelled:

Upgrade Confirmed:

[pantheredeye]

Fails smoke tests... I would need to update these if this goes through. I might need to be pointed in the right direction to do this!